Electric-lamp receptacle.



G.-A. GAUTHIE R. ELECTRIC LAMP RECEPTACLE.

- APPLICATION FILED DEC- 30, I9| 3-' 1,168,190. Patented Jan. 11, 1916.

3 woe W601 GEORGE A. GAUTHIER, 0F HARTFORD, C

ELECTRIC COMPANY, OF HARTFORD, NECTICUT.

Specification of Letters Patent.

ONNECTICUT, ASSIG-NOB TO'THE ARROW CONNECTICUT, A COREOBATION OF CON-ELECTBIC-L-AMP BECEPTAOLE.

Patented J an. 11, 1916.

Application filed December 30, 1913. Serial No. 809,568.

To all whom it may concern:

Be it known that I, Gnonen A. GAUTHIER, a citizen of the United StatesofAmerica, and residing at Hartford, in the county of Hartford and Stateof Connecticut, have invented a certain new and useful Improvement inElectric-Lamp Receptacles, of which the following is a specification.

My invention relates to electric lamp 'recepta'cles and particularly tolamp receptacles for sign plates or outlet boxes, the

object of my invention being to provide improved means shell lampterminal on the receptacle body.

' Inthe accompanying drawings, Figurel is an inverted plan of a signreceptacle of one type in which my invention is embodied; Fig. 2 is avertical section on the line 2'2, Fig. 1; Fig. 3 is aplan view of thereceptacle; and Fig. l is a perspective showing the position of themetal parts,

with the porcelain body omitted.

In sign receptacles, outlet box receptacles and the like which areexposed to weather ing conditions and the action of fumes andgas'es'constantly discharged from furnace chimneys, discoloration,oxidation, etc., of the usual screw-shell lamp terminal rapidly takesplace and it is frequently desirable to replace the screw shell. Inorder to do this conveniently the shell must be fastened by screwsaccessible from the front of the receptacle and this has already beenproposed. As heretofore constructed, these screws pass through the baseof the receptacle and take intonuts or the like which are insecurelyheld merely by wax or the like on the back of the porcelain. As aresult, when the new screw shell has been arranged in position and it isattempted to insert the holding screws, it is a common experience tofind that the loosely held nut is not in register with the hole throughthe base and conse quently the screw will not enter. Slight pressurewhen the screw is bearing against the nut, and not threading into it,frequently forces out the wax and with it the nut, which is thus readilylost. For these and other reasons, it is a common experience to find anew shell secured only by a single screw entering the wire terminalplate on the back of the receptaclea condition whollv unworkmanlike andinsecure, but resulting from the defects above noted.

In the present construction, I have elimithreaded holes of the positionof the yoke has been positively for mounting the usual screw body 18 isheld by the security -nated the danger of such practice, by providing ayoke oreplate into .which the securing screws for the screw hold saidyoke in position by means which are undisturbed on the removal of thescrew shell. Consequently when the new shell is placed,in position andthe securing screws are passed through the base, they enter the the yokewithout fail since maintained in registry with the holes in thereceptacle base.

' The present construction may be applied tovarious types ofreceptacles. The receptacle here shown comprises a cup shaped 10 withlugs 11 adjacent its lamp re ceiving end by means of which it maybemounted on a sign plate. The outer face of the diaphragm 12 which formsthe bottom of the receptacle, is provided with parallel grooves 13, 14for the reception of line wires. Recesses 15, 16 out by the line wiregrooves, form seats for the strap 17- and the yoke 18 respectively.Outwardly struck tongues 19 and 20 form terminals for the line wires.Connection from strap 1 7 "to the center contact21'of the receptacle 1ssecured through thescrew 22 whichholds both strap and center contact inplace.

The yoke 18 is tapped at'the ends of its two legs to receive the screws23, 24 which pass down through the washers 25 and base flanges 26 of thescrew shell terminal 27 The screw'shell is thus not only mechanicallyheld in position on the receptacle but. also electrically connected toone of the-line wires. The yoke is also tapped to receive 'the'securityscrew 28 the head of which is seated in the well 29 below the baseflange of the screw shell. A lug .30 may be formed on one leg of theyoke to afford sufficient metal for the tap without/unduly Weakening theyoke. It is obvious'that this conmoved from the front of the receptacleby loosening the screws 23, 24 white the yoke screw 28 in exact positionto receive the screws 23, 24 when readjusted with the new screw shell.

I The precise manner of. fastening the yoke in position may beva ried inmany ways and I do not limit my invention to the precise structureshown.

I claim as my invention 2- 1. A lamp receptacle comprising an insushelltake, and

struction enables the screw shell to be 1'6- tapped intosaid yoke tohold the latter in lating base, a screw shell'with base flange thereon,a wire terminal yoke, .a plurality of screws passing downward throughthe base flange of said screw shell and insulating base and threadedinto said yoke to mechanically and electrically. connect said screwshell and yoke, in combination with a security screw lying below thebase of screw shell andpassing downward through the insulating base ofthe receptacle and position irrespective of the screw shell hold mscrews, substantially as described.

' the holding flange of the screw shell and the base and taking intosaid yoke, in combination With a screw arranged in the well in the baseand beneath the screw shell and passing downward through said'base intoengagement with the yoke to hold the latter form a well, a screw shellwith holding flange seated in the bottom of said well, a

.current-carrying yoke plate mounted on the inner face of said basebeneath said well, a-

plurality of screws passing downward through the holding flange of thescrew shell and the base and taking into said yoke, in combination witha screw arranged in the well in the base and beneaththe screw shell andpassing" downward through said base into engagement with theyoke to holdthe. latter in fixed position to receiveithe screw shell securingscrews, said yoke-en gaging screw being inaccessible in the completedfitting.

In testiinonv whereof I have signed my name to this specification, inthe presence of two subscribin witnesses.

GEO GE AI GAUTHIER.

Witnesses WM, HENRY Hanmxo'ron, W. S. PRATT.

copies ofthh patent may be obtained for five cents each, bfaddressingthe Commissioner of Patents,

Washington, ID. 0.

